{"title":"基于3D BiFeO3−x微花的高灵敏度和选择性室温NO2气体传感器","authors":"Wei Wang, Wei Jiang, Lei Zhuang","doi":"10.1007/s13391-024-00534-8","DOIUrl":null,"url":null,"abstract":"<div><p>High-performance chemresistive gas sensors operating at low or room temperatures are of great potential for practical applications. In this work, the oxygen vacancies-rich BiFeO<sub>3 − x</sub> microflowers were synthesized using a facile solvothermal route. The characterized results showed that BiFeO<sub>3 − x</sub> was assembled with nanosheets, and displayed a diameter of around 1 μm. The as-fabricated BiFeO<sub>3 − x</sub> gas sensor exhibited fine sensing properties towards 0.5-5 ppm NO<sub>2</sub> under ~ 23 <sup>o</sup>C, including a response of 2.92 to 5 ppm NO<sub>2</sub>, and it also maintained a response of 1.05 towards 50 ppb NO<sub>2</sub>. The gas sensor demonstrated a theoretical limit of detection as low as 273 ppb, rapid response/recovery speed (22/69 s), good selectivity, and repeatability. The improved NO<sub>2</sub> sensing mechanism of enriched oxygen vacancies-BiFeO<sub>3 − x</sub> was investigated regarding its micro-nano structure and abundant oxygen species.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":536,"journal":{"name":"Electronic Materials Letters","volume":"21 1","pages":"102 - 110"},"PeriodicalIF":2.1000,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Highly Sensitive and Selective Room Temperature NO2 Gas Sensor Based on 3D BiFeO3 − x Microflowers\",\"authors\":\"Wei Wang, Wei Jiang, Lei Zhuang\",\"doi\":\"10.1007/s13391-024-00534-8\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>High-performance chemresistive gas sensors operating at low or room temperatures are of great potential for practical applications. In this work, the oxygen vacancies-rich BiFeO<sub>3 − x</sub> microflowers were synthesized using a facile solvothermal route. The characterized results showed that BiFeO<sub>3 − x</sub> was assembled with nanosheets, and displayed a diameter of around 1 μm. The as-fabricated BiFeO<sub>3 − x</sub> gas sensor exhibited fine sensing properties towards 0.5-5 ppm NO<sub>2</sub> under ~ 23 <sup>o</sup>C, including a response of 2.92 to 5 ppm NO<sub>2</sub>, and it also maintained a response of 1.05 towards 50 ppb NO<sub>2</sub>. The gas sensor demonstrated a theoretical limit of detection as low as 273 ppb, rapid response/recovery speed (22/69 s), good selectivity, and repeatability. The improved NO<sub>2</sub> sensing mechanism of enriched oxygen vacancies-BiFeO<sub>3 − x</sub> was investigated regarding its micro-nano structure and abundant oxygen species.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":536,\"journal\":{\"name\":\"Electronic Materials Letters\",\"volume\":\"21 1\",\"pages\":\"102 - 110\"},\"PeriodicalIF\":2.1000,\"publicationDate\":\"2024-11-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Electronic Materials Letters\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s13391-024-00534-8\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electronic Materials Letters","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s13391-024-00534-8","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Highly Sensitive and Selective Room Temperature NO2 Gas Sensor Based on 3D BiFeO3 − x Microflowers
High-performance chemresistive gas sensors operating at low or room temperatures are of great potential for practical applications. In this work, the oxygen vacancies-rich BiFeO3 − x microflowers were synthesized using a facile solvothermal route. The characterized results showed that BiFeO3 − x was assembled with nanosheets, and displayed a diameter of around 1 μm. The as-fabricated BiFeO3 − x gas sensor exhibited fine sensing properties towards 0.5-5 ppm NO2 under ~ 23 oC, including a response of 2.92 to 5 ppm NO2, and it also maintained a response of 1.05 towards 50 ppb NO2. The gas sensor demonstrated a theoretical limit of detection as low as 273 ppb, rapid response/recovery speed (22/69 s), good selectivity, and repeatability. The improved NO2 sensing mechanism of enriched oxygen vacancies-BiFeO3 − x was investigated regarding its micro-nano structure and abundant oxygen species.
期刊介绍：
Electronic Materials Letters is an official journal of the Korean Institute of Metals and Materials. It is a peer-reviewed international journal publishing print and online version. It covers all disciplines of research and technology in electronic materials. Emphasis is placed on science, engineering and applications of advanced materials, including electronic, magnetic, optical, organic, electrochemical, mechanical, and nanoscale materials. The aspects of synthesis and processing include thin films, nanostructures, self assembly, and bulk, all related to thermodynamics, kinetics and/or modeling.
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